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Predicting the glass transition temperature of bioactive glasses from their molecular chemical composition

Paper ID Volume ID Publish Year Pages File Format Full-Text
741 61 2011 5 PDF Available
Title
Predicting the glass transition temperature of bioactive glasses from their molecular chemical composition
Abstract

A recently published paper (M.D. O’Donnell, Acta Biomaterialia 7 (2011) 2264–2269) suggests that it is possible to correlate the glass transition temperature (Tg) of bioactive glasses with their molar composition, based on iterative least-squares fitting of published Tg data. However, we show that the glass structure is an important parameter in determining Tg. Phase separation, local structural effects and components (intermediate oxides) which can switch their structural role in the glass network need to be taken into consideration, as they are likely to influence the glass transition temperature of bioactive glasses. Although the model suggested by O’Donnell works reasonably well for glasses within the composition range presented, it is oversimplified and fails for glasses outside certain compositional boundaries.

Keywords
Bioactive glass; Glass transition temperature; Thermal analysis; Glass property modelling; Thermal properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 7, Issue 10, October 2011, Pages 3601–3605
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us